Performance of various strain-hardening cement-based composites (SHCC) subject to uniaxial impact tensile loading

Curosu, Iurie; Mechtcherine, Viktor; Forni, Daniele; Cadoni, Ezio

doi:10.1016/j.cemconres.2017.08.008

Cited by 118 publications

(68 citation statements)

References 28 publications

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“…Although extensively studied at the material level [5,30,31,32] and in small-scale impact tests [20,33] the performance of SHCC and TRC as strengthening layers subject to highly dynamic loading conditions was not investigated as of yet. For getting an initial insight into the behavior of these materials as strengthening layers on the rear-side of impacted concrete elements, large-scale impact experiments have been performed involving well-studied SHCC and TRC compositions.…”

Section: Representative Resultsmentioning

confidence: 99%

“…The proposed strengthening concept is presented in Figure 1. It suggests the application of thin layers of novel, mineralbonded fiber reinforced composites, such as Textile Reinforced Concrete (TRC) [2,3] and Strain-Hardening Cement-based Composites (SHCC) [4,5]. These materials exhibit a high https://doi.org/10.21012/FC10.235408 tensile ductility, mechanical strength and durability, and can be applied in thin layers by using various efficient techniques, such as laminating or spraying [6].…”

Section: Introductionmentioning

confidence: 99%

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Mineral-bonded composites for enhanced structural impact safety - Overview of the format, goals and achievements of the research group GRK 2250

Curosu¹

2019

Proceedings of the 10th International Conference on Fracture Mechanics of Concrete and Concrete Structures

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Existing concrete and reinforced concrete structures feature, as a rule, a relatively low resistance against various types of dynamic loading, such as earthquake, impact or blast. This makes it important to develop effective and feasible solutions for the enhancement of the structural impact resistance, for example, by applying thin layers of strengthening material. In the frame of the Research Training Group GRK 2250 "Mineral-bonded composites for enhanced structural impact safety", established in 2017 by the German Research Foundation (DFG) at the TU Dresden, design concepts for such strengthening layers are developed and investigated experimentally and numerically. The contribution provides an overview about the goals, structure and multidisciplinary research done by the Research Training Group and presents some representative results on the impact resistance of ductile composites with continuous textile and/or short fiber reinforcement.

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Section: Representative Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Mineral-bonded composites for enhanced structural impact safety - Overview of the format, goals and achievements of the research group GRK 2250

Curosu¹

2019

Proceedings of the 10th International Conference on Fracture Mechanics of Concrete and Concrete Structures

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“…The fresh SHCC materials were initially casted as prismatic beams of dimensions 75 mm x 75 mm x 280 mm. The beams were transversally cut in blocks with lengths according to the testing conditions and investigated length of the specimens [1]. The specimens tested quasi-statically had a bigger total length necessary for the 12.5 mm embedment at both ends (see next section).…”

Section: Specimen Productionmentioning

confidence: 99%

“…The third type consisted of a highstrength finely-grained cementitious matrix and was reinforced with HDPE fibres. The detailed report was published in [1].…”

Section: Introductionmentioning

confidence: 99%

Dynamic Tensile Behaviour of Strain-Hardening Cement-Based Composites (SHCC)

et al. 2018

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The paper presents a part of an experimental campaign consisting of quasi-static and impact tensile experiments on three different types of strain-hardening cement-based composites (SHCC) as well as on their constitutive cementitious matrices [1]. The investigation on different SHCC types was intended for analysing the effect of matrix composition and fibre type on the strain rate sensitivity of the composites and for enabling the formulation of material design recommendations for impact resistant SHCC. The dynamic tests were carried out by means of a Modified Hopkinson Bar (MHB) installed in the DynaMat Laboratory in Lugano, Switzerland, which enabled the characterization of the dynamic material behaviour under direct tensile loading in terms of force-displacement relationships.

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“…They have the characteristics of higher tensile ductility and compression deformation properties, and the uniaxial tensile and compression strains can be over 3% and 0.5%, respectively [1,2]. Although, there are varieties of names such as engineered cementitious composites (ECC) [3,4], ultra-high performance fiber reinforced cementitious composites (UHPFRCC) [5,6], strain hardening cementitious composites (SHCC) [7][8][9], ultra-high toughness cementitious composites (UHTCC) [10][11][12] and fiber reinforced concrete (FRC) [13,14], they all maintain the essence of high ductility and have achieved good engineering applications [15][16][17][18][19]. The high ductility cementitious composites are composed of polyvinyl alcohol fiber (PVA) and fine aggregates, such as cement, fly ash, and fine river sand.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties of Desert Sand-Based Fiber Reinforced Concrete (DS-FRC)

et al. 2019

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This paper presents the study on the properties of high-ductility fiber reinforced concrete made with desert sand from China’s Mu Us desert. The workability and uniaxial tensile/compression properties of undisturbed desert sand-based fiber reinforced concrete (DS-FRC) with the change of water-to-binder ratio (W/B), sand-to-binder ratio (S/B) and desert sand replacement rate (DSRR) were experimentally investigated. Experimental results reveal that the appropriate W/B and desert sand content are conducive to the workability development of DS-FRC. The uniaxial tension/compression properties of DS-FRC are mainly affected by the W/B. Especially, the highest uniaxial tensile/compression stresses and corresponding strains are obtained at the W/B of 0.29. The S/B has similar effects on the uniaxial tensile/compression properties, and an S/B of 0.36 is the optimal ratio. In terms of the DSRR, it shows less effect on the uniaxial tensile/compression properties, even for the DSRR of 100%. The results of the tests indicate that undisturbed desert sand can be used as silica sand in high-ductility fiber reinforced concrete.

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Performance of various strain-hardening cement-based composites (SHCC) subject to uniaxial impact tensile loading

Cited by 118 publications

References 28 publications

Mineral-bonded composites for enhanced structural impact safety - Overview of the format, goals and achievements of the research group GRK 2250

Mineral-bonded composites for enhanced structural impact safety - Overview of the format, goals and achievements of the research group GRK 2250

Dynamic Tensile Behaviour of Strain-Hardening Cement-Based Composites (SHCC)

Mechanical Properties of Desert Sand-Based Fiber Reinforced Concrete (DS-FRC)

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